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A Wholly Degradable, Rechargeable Zn-Ti3C2 MXene Capacitor with Superior Anti-Self-Discharge Function
Yang, Qi1; Huang, Zhaodong1; Li, Xinliang1; Liu, Zhuoxin1; Li, Hongfei1; Liang, Guojin1; Wang, Donghong1; Huang, Qing2; Zhang, Suojiang3; Chen, Shimou3; Zhi, Chunyi1,4
2019-07-01
Source PublicationACS NANO
ISSN1936-0851
Volume13Issue:7Pages:8275-8283
Abstract

Degradable energy storage systems (ESSs) have been proposed to tackle increasing e-wastes such as heavy metals and toxic organic electrolytes. However, currently reported degradable ESSs are scarce because it is very difficult to make all of the electrochemical components degradable as they must be stable for energy storage. Here, we designed an all-component degradable and rechargeable Zn-MXene capacitor with outstanding anti-self-discharge function using zinc nanosheets and Ti3C2 MXene as electrodes. The whole capacitor can retain ca. 82.5% of the capacitance after 1000 cycles and be totally degraded within 7.25 days, comprehensively surpassing the current degradable supercapacitors (120 days, 400 cycles) and batteries (19 days, 0-20 cycles). In addition, while supercapacitors are notorious for intensive self-discharge, the Zn-MXene capacitor demonstrated the lowest self-discharge rate of 6.4 mV h(-1), better than all the previous supercapacitors with specifically designed anti-self-discharge components including electrodes (>300 mV h(-1)), electrolytes (12-50 mV h(-1)), and separators (20-400 mV h(-1)). This is illustrated by the as-proposed "static electricity-immune mechanism" which refers to breaking the electrostatic adsorption. This Zn-MXene capacitor represents a great advance in degradable rechargeable ESSs and provides a strategy to fundamentally overcome the self-discharge problem encountered by supercapacitors.

KeywordDegradable Ti3c2 Mxene Rechargeable Zn-ion Capacitor Self-discharge
DOI10.1021/acsnano.9b03650
Language英语
WOS KeywordDouble-layer Capacitor ; Hybrid Energy-storage ; Polymer ; Nati2(Po4)(3) ; Electrolyte ; Networks ; State
Funding ProjectGRF Scheme[CityU 11305218] ; Science Technology and Innovation Committee of Shenzhen Municipality[JCYJ20170818103435068]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding OrganizationGRF Scheme ; Science Technology and Innovation Committee of Shenzhen Municipality
WOS IDWOS:000477786400092
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30349
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Shimou; Zhi, Chunyi
Affiliation1.City Univ Hong Kong, Dept Mat Sci & Engn, 83 Tat Chee Ave, Hong Kong 999077, Peoples R China
2.Chinese Acad Sci, Ningbo Inst Ind Technol, Engn Lab Adv Energy Mat, Ningbo 315201, Zhejiang, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
4.City Univ Hong Kong, Shenzhen Res Inst, Shenzhen 518057, Peoples R China
Recommended Citation
GB/T 7714
Yang, Qi,Huang, Zhaodong,Li, Xinliang,et al. A Wholly Degradable, Rechargeable Zn-Ti3C2 MXene Capacitor with Superior Anti-Self-Discharge Function[J]. ACS NANO,2019,13(7):8275-8283.
APA Yang, Qi.,Huang, Zhaodong.,Li, Xinliang.,Liu, Zhuoxin.,Li, Hongfei.,...&Zhi, Chunyi.(2019).A Wholly Degradable, Rechargeable Zn-Ti3C2 MXene Capacitor with Superior Anti-Self-Discharge Function.ACS NANO,13(7),8275-8283.
MLA Yang, Qi,et al."A Wholly Degradable, Rechargeable Zn-Ti3C2 MXene Capacitor with Superior Anti-Self-Discharge Function".ACS NANO 13.7(2019):8275-8283.
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